700w IPsec

I am trying to use the built in IPsec in the 700w to connect to our office firewall. On my pc I use an IPsec client, and I have that confured properly, using a pre-shared key and it works great. I tried to put the same options in the 700w and the interface is different. In addition to the pre-shared key, the phone asks me for username and password, but these are not part of the VPN policy on the router.